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8 Cards in this Set
- Front
- Back
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acceleration
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rate at which velocity changes
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energy
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the ability to cause change
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force
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a push or a pull; all forces have both a size and direction
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friction
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a force that opposes motion between 2 surfaces that are touching
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motion
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an object's change in position relative to a reference point over a period of time
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resistance
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the opposition to the flow of energy
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speed
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the rate at which an object moves
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unbalanced
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the state in which the combined forces exerted on an object do not add up to zero (causes a change of speed or direction)
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